CN103645367A - Transformation method of lightning arrester outer leading type capacitive voltage transformer - Google Patents
Transformation method of lightning arrester outer leading type capacitive voltage transformer Download PDFInfo
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- CN103645367A CN103645367A CN201310537238.3A CN201310537238A CN103645367A CN 103645367 A CN103645367 A CN 103645367A CN 201310537238 A CN201310537238 A CN 201310537238A CN 103645367 A CN103645367 A CN 103645367A
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- lightning arrester
- transformer
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- potential transformer
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Abstract
The invention discloses a transformation method of a lightning arrester outer leading type capacitive voltage transformer. The lightning arrester and transformer wire connection in a capacitive voltage transformer oil tank is changed to be the outer wire connection mode, so that the following condition can be effectively avoided: when the lightning arrester, the transformer and the connection wires thereof are completely packaged in the capacitive voltage transformer and immerged into insulating oil by adopting a traditional structure mode, when the failure judgment process and the detect finding process are performed, tests only can be performed after a series of onerous processes including disassembling the capacitive voltage transformer and then disconnecting partial connection wires between the lightning arrester and the electromagnetic transformer and the like, so the working efficiency of test detection and failure judgment can be greatly improved, the transformer does not need to be disassembled, advantages of convenient operation and high efficiency can be realized, the problem can be solved once and for all, and the test and failure hidden danger finding efficiency can be greatly improved.
Description
Technical field
The present invention relates to capacitance type potential transformer structure-design technique field, relate in particular to the remodeling method that a kind of lightning arrester draws type capacitance type potential transformer outward.
Background technology
At present, 550kv, 220kv, 110kv and 35kv capacitance type potential transformer be primary is applied to circuit or busbar voltage monitoring, after the lightning arrester of conventional condenser voltage transformer (VT) inside is in parallel with electromagnet portion, be sealed in fuel tank internal, as Fig. 1, shown in Fig. 2, lightning arrester is connected between mutual inductor high-pressure side and ground all the time, no matter be new clothes, routine test and troubleshooting, all cannot to lightning arrester or mutual inductor, test separately, cannot find that it is deteriorated, damage, if need fault judgement, Defect Search, after must disintegrating to capacitance type potential transformer, open lightning arrester and electromagnetic transformer part line, could test it.
Summary of the invention
The object of the invention is to aim to provide the remodeling method that a kind of lightning arrester draws type capacitance type potential transformer outward, the method has solved the difficult problem that conventional condenser voltage transformer (VT) cannot be separately tested lightning arrester or mutual inductor effectively, and easy and simple to handle, safe and reliable, effective, greatly improved test and potential faults search efficiency.
For realizing the technical scheme that object of the present invention adopts, be: a kind of lightning arrester draws the remodeling method of type capacitance type potential transformer outward, comprises the steps:
(1), lightning arrester, wire connecting terminal of transformer in capacitance type potential transformer are opened respectively, remove former connecting line and connect respectively insulated conductor;
(2), select capacitance type potential transformer insulator suitable position, bore two spacing be not less than the through hole of 20cm and in described through hole, arrange outside draw bolt;
(3), by step (1), be connected to insulated conductor on lightning arrester, wire connecting terminal of transformer respectively be arranged on the outer bolt that draws described in step (2) and connect one to one;
(4), the lightning arrester outside capacitance type potential transformer insulator, mutual inductor being drawn to bolt outward connects with short circuit part.
Described short circuit part is outside equipped with insulation course.
Described outer drawing arranges insulation interrupter between bolt.
The remodeling method that lightning arrester of the present invention draws type capacitance type potential transformer is outward that we are for realizing failure judgement quickly and easily, in conjunction with years'experiences, propose, by by lightning arrester in capacitance type potential transformer fuel tank, mutual inductor line reconfiguration externally, thereby it is inner and be immersed in insulating oil effectively to have avoided employing traditional structure mode that lightning arrester and mutual inductor and connecting line thereof are packaged in to capacitance type potential transformer completely, carrying out fault judgement, during Defect Search, after must disintegrating to capacitance type potential transformer, open a series of heavy operations such as lightning arrester and electromagnetic transformer part line, situation that could be to its test, greatly improved the work efficiency that detects test and failure judgement, without mutual inductor is disintegrated, easy and simple to handle, efficiency is high, reach the effect of putting things right once and for all.In the process of transformation, for realizing the insulation of lightning arrester and electromagnetic unit, applicant is through the test of several times different schemes, final selected by the insulation that utilizes the outer insulator insulation of capacitance type potential transformer to keep lightning arrester and electromagnetic unit, and guarantee to maintain a certain distance between lightning arrester unit and mutual inductor unit leading-out terminal, reach a safe distance, through a large amount of tests, result shows should keep at least distance of 20cm between the extension line outside insulator, just can guarantee the safety of equipment, and more preferably protect the distance of 25-35cm, can guarantee the safety of equipment on the one hand, stable, reliably, on the other hand, structure space relative compact, minimizing takies the device space.As preferred version, on short circuit part, insulation course is set, draw outside between bolt interrupter is set, can further strengthen its insulation isolation performance, to improve the accuracy of test and the security of equipment.The judgement of the regular maintenance that the present invention is capacitance type potential transformer, fault, Defect Search provide a kind of easy and simple to handle, safe and reliable, remodeling method that cost is low, and correctional effect is good, has greatly improved the efficiency of test and looking up the fault hidden danger.
accompanying drawing explanation:
Below in conjunction with accompanying drawing, the present invention is described further
Fig. 1 is the structural representation before the present invention transforms;
Fig. 2 is the electrical schematic diagram before the present invention transforms;
Fig. 3 is the improved structural representation of the present invention;
Fig. 4 is the improved electrical schematic diagram of the present invention.
Embodiment
As shown in Figure 3, Figure 4: lightning arrester of the present invention draws the remodeling method of type capacitance type potential transformer outward, comprises the steps:
(1), lightning arrester in capacitance type potential transformer 4, mutual inductor 5 connection terminals are opened respectively, remove former connecting line and connect respectively insulated conductor 3;
(2), select capacitance type potential transformer insulator 1 suitable position, bore two spacing be not less than the through hole of 20cm and in described through hole, arrange outside draw bolt 2;
(3), by step (1), be connected to insulated conductor 3 on lightning arrester 4, mutual inductor 5 connection terminals respectively be arranged on the outer bolt 2 that draws described in step (2) and connect one to one;
(4), the outer bolt 2 use short circuit parts 6 that draw of the lightning arrester outside capacitance type potential transformer insulator 4, mutual inductor 5 are connected.
The present invention by by lightning arrester, mutual inductor line reconfiguration in capacitance type potential transformer fuel tank externally, has greatly improved the work efficiency that detects test and failure judgement, without mutual inductor is disintegrated, easy and simple to handle, efficiency is high, reaches effect once and for all.The time of traditional structure upkeep operation and the fault of comparing judgement, needs the work that the time just can complete before transformation, after transformation, only need half an hour to complete.
As preferred version of the present invention, described short circuit part 6 is outside equipped with insulation course, can effectively improve the outer insulating property between bolt of drawing, thereby the safety and stability while ensureing test or fault judgement and result is accurate.
The solution of the present invention is optimized on a step ground again: outside described, draw 2, bolt insulation interrupter is set, can further improve the outer insulation isolation performance between bolt of drawing.
Below in conjunction with embodiment, the present invention is further described:
Embodiment mono-
On May 17th, 2013, the transformation of Dui Mou 35KV transformer station capacitance type potential transformer, comprises the following steps:
(1), lightning arrester, wire connecting terminal of transformer in capacitance type potential transformer are opened respectively, remove former connecting line and connect respectively insulated conductor;
(2), select capacitance type potential transformer insulator suitable position, bores two through holes that diameter is 8mm, between through hole, nearest spacing is 20cm, and draws bolt outside arranging in described through hole, by pad and gland nut, is fixed;
(3), by step (1), be connected to insulated conductor on lightning arrester, wire connecting terminal of transformer respectively be arranged on the outer bolt that draws described in step (2) and connect one to one;
(4), the lightning arrester outside capacitance type potential transformer insulator, mutual inductor being drawn to bolt outward connects with the conductive metal sheet that is coated with insulation course.
Embodiment bis-
On August 14th, 2013, the transformation of Dui Mou 110KV transformer station capacitance type potential transformer, comprises the following steps:
(1), lightning arrester, wire connecting terminal of transformer in capacitance type potential transformer are opened respectively, remove former connecting line and connect respectively insulated conductor;
(2), select capacitance type potential transformer insulator suitable position, bores two through holes that diameter is 10mm, between through hole, nearest spacing is 25cm, and draws bolt outside arranging in described through hole, by pad and gland nut, is fixed;
(3), by step (1), be connected to insulated conductor on lightning arrester, wire connecting terminal of transformer respectively be arranged on the outer bolt that draws described in step (2) and connect one to one;
(4), the lightning arrester outside capacitance type potential transformer insulator, mutual inductor being drawn to bolt outward connects with insulated conductor.
Embodiment tri-
On September 4th, 2013, the transformation of Dui Mou 110KV transformer station capacitance type potential transformer, comprises the following steps:
(1), lightning arrester, wire connecting terminal of transformer in capacitance type potential transformer are opened respectively, remove former connecting line and connect respectively insulated conductor;
(2), select capacitance type potential transformer insulator suitable position, bores two through holes that diameter is 15mm, between through hole, nearest spacing is 35cm, and draws bolt outside arranging in described through hole, by pad and gland nut, is fixed;
(3), by step (1), be connected to insulated conductor on lightning arrester, wire connecting terminal of transformer respectively be arranged on the outer bolt that draws described in step (2) and connect one to one;
(4), the lightning arrester outside capacitance type potential transformer insulator, mutual inductor drawn to bolt outward with insulated conductor, connect, and outside described, draw insulated isolation cover be set on bolt.
Claims (3)
1. lightning arrester draws a remodeling method for type capacitance type potential transformer outward, it is characterized in that: it comprises the steps:
(1), lightning arrester, wire connecting terminal of transformer in capacitance type potential transformer are opened respectively, remove former connecting line and connect respectively insulated conductor;
(2), select capacitance type potential transformer insulator suitable position, bore two spacing be not less than the through hole of 20cm and in described through hole, arrange outside draw bolt;
(3), by step (1), be connected to insulated conductor on lightning arrester, wire connecting terminal of transformer respectively be arranged on the outer bolt that draws described in step (2) and connect one to one;
(4), the lightning arrester outside capacitance type potential transformer insulator, mutual inductor being drawn to bolt outward connects with short circuit part.
2. lightning arrester as claimed in claim 1 draws the remodeling method of type capacitance type potential transformer outward, it is characterized in that: described short circuit part is outside equipped with insulation course.
3. lightning arrester as claimed in claim 1 draws the remodeling method of type capacitance type potential transformer outward, it is characterized in that: described outer drawing arranges insulation interrupter between bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310537238.3A CN103645367A (en) | 2013-11-04 | 2013-11-04 | Transformation method of lightning arrester outer leading type capacitive voltage transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310537238.3A CN103645367A (en) | 2013-11-04 | 2013-11-04 | Transformation method of lightning arrester outer leading type capacitive voltage transformer |
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| Publication Number | Publication Date |
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| CN103645367A true CN103645367A (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310537238.3A Pending CN103645367A (en) | 2013-11-04 | 2013-11-04 | Transformation method of lightning arrester outer leading type capacitive voltage transformer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074506U (en) * | 1990-09-28 | 1991-04-03 | 王国才 | Double-functional discharge counter |
| CN101833043A (en) * | 2010-03-30 | 2010-09-15 | 广元电业局 | Method for measuring electric capacity and dielectric loss of capacitance type voltage transformer |
| CN201859759U (en) * | 2009-10-20 | 2011-06-08 | 大连互感器有限公司 | Capacitance type voltage mutual inductor with error externally adjusting structure |
| CN103018497A (en) * | 2012-12-21 | 2013-04-03 | 桂林电力电容器有限责任公司 | Medium-voltage grounding terminal structure for capacitor voltage transformer test |
-
2013
- 2013-11-04 CN CN201310537238.3A patent/CN103645367A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074506U (en) * | 1990-09-28 | 1991-04-03 | 王国才 | Double-functional discharge counter |
| CN201859759U (en) * | 2009-10-20 | 2011-06-08 | 大连互感器有限公司 | Capacitance type voltage mutual inductor with error externally adjusting structure |
| CN101833043A (en) * | 2010-03-30 | 2010-09-15 | 广元电业局 | Method for measuring electric capacity and dielectric loss of capacitance type voltage transformer |
| CN103018497A (en) * | 2012-12-21 | 2013-04-03 | 桂林电力电容器有限责任公司 | Medium-voltage grounding terminal structure for capacitor voltage transformer test |
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Application publication date: 20140319 |
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| RJ01 | Rejection of invention patent application after publication |